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| 008 | 061011s2006 gbr|r0p 0 ||eng d | ||
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| 035 | _a(OCoLC)1365255201 | ||
| 040 | _cES-MaBCM | ||
| 245 | 0 | 0 | _aLooping the loop |
| 650 | 2 | 7 |
_aCiencias físicas _958725 |
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_aInvestigación científica _959073 |
| 773 | 0 |
_aEn: _tThe economist _dLondon _w104401 _gVol. 380, no. 8497 (Sept. 2006), p. 93 |
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